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From top to bottom we have a waveshield play model, an unassembled amplifier, a accelerometer controlled bob-09579, a seeeduino music shield and finally the test model for my own pcb. Each one has it’s own world of problem solving involved. I’m in slightly over my head with some of these. Making my own PCB turns out to be the most sensible, economical option and it’s the one I’ve got on with the most.